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From the picture it looks like you don't have a "Yoke to DIN adapter", but an actual "Yoke". If so you need to remove (unscrew?) the DIN valve from the regulator and replace it with the Yoke.padivers:Hello i have a din 1st stage and a apeks adapter to go from yoke to din but how does this adapter attach to the din 1st stage i must be missing something.....